Yamaha PASC5 X0S-00 E-bike charger 42V only providing 12 V

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  • MrBojangles
    Member
    • Jul 2024
    • 31
    • Sweden
    #1

    Yamaha PASC5 X0S-00 E-bike charger 42V only providing 12 V

    Hey Guys!

    Hoping I can get some help here. I have a e-bike charger with 4 pins on the output. It has a light but the light does not turn on.

    When I check the voltage on the 4 pins on one of the pairs I get 12 V. On the other pairs the voltage keeps changing.

    Nothing looks damaged and there are no shorts on any of the capacitors. I've ordered a ESR meter to measure the capacitance of the capacitors but it will take a while for the package to arrive.


    Any tips?

    Thanks
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    • Sam Scarbo
      Member
      • Oct 2023
      • 38
      • Canada
      #2
      You may check the device TJ30S6M3. It is near the two big capacitors near the output. It could be acting as a fast switching high-current rectifier.

        Comment

        • MrBojangles
          Member
          • Jul 2024
          • 31
          • Sweden
          #3
          Originally posted by Sam Scarbo
          You may check the device TJ30S6M3. It is near the two big capacitors near the output. It could be acting as a fast switching high-current rectifier.
          Thanks for the tip dude. You were close. It was the two output capacitors. I removed them to check the capacitance but my multimeter wasn't able to measure so I soldered them back and then it worked. So it must have been the solder joints.

          Anyway looks like it's a good tip in general to check the output capacitors when the output voltage is low.

            Comment

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